C:UsersVic LeeAwesomeProject>react-native run-android Starting JS server... Running D:Androidsdk/platform-tools/adb reverse tcp:8081 tcp:8081 error: closed Could not run adb reverse: Command failed: D:Androidsdk/platform-tools/adb rev erse tcp:8081 tcp:8081 Building and installing the app on the device (cd android && gradlew.bat install Debug... Download https://jcenter.bintray.com/org/webkit/android-jsc/r174650/android-jsc- r174650.aar Download https://jcenter.bintray.com/com/squareup/okio/okio/1.9.0/okio-1.9.0.jar Download https://jcenter.bintray.com/com/squareup/okhttp3/okhttp/3.4.1/okhttp-3. 4.1.jar Download https://jcenter.bintray.com/com/squareup/okhttp3/okhttp-urlconnection/3 .4.1/okhttp-urlconnection-3.4.1.jar Download https://jcenter.bintray.com/com/facebook/fresco/fbcore/0.11.0/fbcore-0. 11.0.aar Download https://jcenter.bintray.com/com/parse/bolts/bolts-tasks/1.4.0/bolts-tas ks-1.4.0.jar Download https://jcenter.bintray.com/com/nineoldandroids/library/2.4.0/library-2 .4.0.jar Download https://jcenter.bintray.com/com/facebook/fresco/imagepipeline-base/0.11 .0/imagepipeline-base-0.11.0.aar Download https://jcenter.bintray.com/com/facebook/fresco/imagepipeline/0.11.0/im agepipeline-0.11.0.aar Download https://jcenter.bintray.com/com/facebook/fresco/imagepipeline-okhttp3/0 .11.0/imagepipeline-okhttp3-0.11.0.aar Download https://jcenter.bintray.com/com/fasterxml/jackson/core/jackson-core/2.2 .3/jackson-core-2.2.3.jar Download https://jcenter.bintray.com/com/squareup/okhttp3/okhttp-ws/3.4.1/okhttp -ws-3.4.1.jar Download https://jcenter.bintray.com/com/facebook/fresco/drawee/0.11.0/drawee-0. 11.0.aar Download https://jcenter.bintray.com/com/facebook/fresco/fresco/0.11.0/fresco-0. 11.0.aar Download https://jcenter.bintray.com/com/facebook/soloader/soloader/0.1.0/soload er-0.1.0.aar :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:checkDebugManifest :app:preReleaseBuild UP-TO-DATE :app:prepareComAndroidSupportAppcompatV72301Library :app:prepareComAndroidSupportRecyclerviewV72301Library :app:prepareComAndroidSupportSupportV42321Library :app:prepareComFacebookFrescoDrawee0110Library :app:prepareComFacebookFrescoFbcore0110Library :app:prepareComFacebookFrescoFresco0110Library :app:prepareComFacebookFrescoImagepipeline0110Library :app:prepareComFacebookFrescoImagepipelineBase0110Library :app:prepareComFacebookFrescoImagepipelineOkhttp30110Library :app:prepareComFacebookReactReactNative0320Library :app:prepareComFacebookSoloaderSoloader010Library :app:prepareOrgWebkitAndroidJscR174650Library :app:prepareDebugDependencies :app:compileDebugAidl :app:compileDebugRenderscript :app:generateDebugBuildConfig :app:generateDebugAssets UP-TO-DATE :app:mergeDebugAssets :app:generateDebugResValues :app:generateDebugResources :app:mergeDebugResources :app:bundleDebugJsAndAssets SKIPPED :app:processDebugManifest :app:processDebugResources :app:generateDebugSources :app:processDebugJavaRes UP-TO-DATE :app:compileDebugJavaWithJavac :app:compileDebugNdk UP-TO-DATE :app:compileDebugSources :app:preDexDebug :app:dexDebug :app:validateDebugSigning :app:packageDebug :app:zipalignDebug :app:assembleDebug :app:installDebug Installing APK 'app-debug.apk' on 'MI 2 - 4.1.1' Installed on 1 device. BUILD SUCCESSFUL Total time: 1 mins 56.539 secs Starting the app on 343bf6ab (D:Androidsdk/platform-tools/adb -s 343bf6ab shel l am start -n com.awesomeproject/.MainActivity)... Starting: Intent { cmp=com.awesomeproject/.MainActivity }
效果：
本机为小米2s:系统为4.11
果然，系统默认禁用掉了 APP 的 显示悬浮窗 的权限。因为那个菜单是实用悬浮窗来显示的，所以一直看不到。开启这个权限，然后就可以正常唤起菜单了。然后菜单中选择Dev Settings->Debug server host for device，填入你开发电脑的 IP 地址。如果手机和电脑不在同一个网段，或者手机不能访问到，就会出现如下页面：
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也没用啊 ！
